m-Chloroperbenzoic acid → (3R)-3-methyl-6-(oxiran-2-yl)-3,4-dihydro-1H-isochromen-1-one

HRID 2175780Notes

Reaction equation

HRID 2175780 reaction equation
[CH:1]([C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[O:8][CH:7]([CH3:14])[CH2:6]2)=[CH2:2].C1C=C(Cl)C=C(C(OO)=[O:23])C=1>C(Cl)Cl.O>[CH3:14][C@@H:7]1[CH2:6][C:5]2[C:10](=[CH:11][CH:12]=[C:3]([CH:1]3[CH2:2][O:23]3)[CH:4]=2)[C:9](=[O:13])[O:8]1

Participants

5

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 675177156-ethenyl-3-methyl-3,4-dihydro-1H-isochromen-1-one

Product 1

HCID 86693039(3R)-3-methyl-6-(oxiran-2-yl)-3,4-dihydro-1H-isochromen-1-one

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent2×

Procedure

A solution of 6-ethenyl-3-methyl-3,4-dihydro-1H-isochromen-1-one (1.69 g, 8.98 mmol) in DCM (60 mL) was treated with mCPBA (3.100 g, 17.96 mmol) overnight at room temperature. The reaction was then diluted with water (50 mL) and DCM (50 mL). The organic layer was further washed successively with saturated aqueous sodium bicarbonate (30 mL), water (30 mL), and brine (30 mL). The organic layer was then dried over magnesium sulfate, filtered and concentrated. The residue was purified via MPLC (15-40% EtOAc/Hex) to give the title compound.

Workup

  1. washThe organic layer was further washed successively with saturated aqueous sodium bicarbonate (30 mL), water (30 mL), and brine (30 mL)
  2. dry with materialThe organic layer was then dried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified via MPLC (15-40% EtOAc/Hex)

Sources & evidence

ORD record
ord-96b801f453b147e4abf52b77db3265d9
Source dataset
uspto-grants-2015_06
Patent number
US09062070B2

Reaction notes

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